Changes between Version 27 and Version 28 of SystemDevelopmentEN

Timestamp:

Jul 20, 2013, 11:17:02 AM (11 years ago)

Author:

Martin Kolman

Comment:

--

SystemDevelopmentEN

@@ -148 +148 @@
 
 == Signals ==
+There is a built-in signaling system, represented by the Signal class in the core.signal shared module. It is is a classic signaling implementation: signals can be declared, connected to and arguments can be passed when the signal is triggered.
+
+Example:
+{{{
+#!python
+
+from core.signal import Signal
+
+# declare the signal
+spamArrived = Signal()
+
+# create signal handler
+def handleSpam(spamType):
+  print("delicious %d arrived!" % spamType)
+
+# connect handler to the signal
+spamArrived.connect(handleSpam)
+
+# trigger the signal & pass an argument
+spamArrived("original SPAM")
+}}}
+